US4922686A - Vacuum packaging method - Google Patents

Vacuum packaging method Download PDF

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Publication number
US4922686A
US4922686A US06/747,400 US74740085A US4922686A US 4922686 A US4922686 A US 4922686A US 74740085 A US74740085 A US 74740085A US 4922686 A US4922686 A US 4922686A
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Prior art keywords
receptacle
pressure
chamber
air
extraction
Prior art date
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Expired - Fee Related
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US06/747,400
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English (en)
Inventor
Pietro Segota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cryovac LLC
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WR Grace and Co
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Application filed by WR Grace and Co filed Critical WR Grace and Co
Assigned to W.R. GRACE & CO.-CONN, A CORP. OF CT reassignment W.R. GRACE & CO.-CONN, A CORP. OF CT MERGER (SEE DOCUMENT FOR DETAILS). MAY 25, 1988 Assignors: GRACE MERGER CORPORATION, W.R. GRACE & CO.
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Publication of US4922686A publication Critical patent/US4922686A/en
Assigned to CRYOVAC, INC. reassignment CRYOVAC, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: W.R. GRACE & CO.-CONN.
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or bags

Definitions

  • the present invention relates to a method of and apparatus for packaging an article in a receptacle to obtain a vacuum pack.
  • the present invention comprises a process of vacuum packaging an article in a receptacle, comprising loading the article in the receptacle, extracting gas from around the exterior of the receptacle to lower the surrounding pressure, extracting gas from within the receptacle, and closing the receptacle in a gas-tight manner after the extraction of the gas from its interior, characterised by partially restoring the pressure surrounding the exterior of the receptacle, then further extracting gas from both around the exterior of the receptacle and within the receptacle, and again partially restoring the gas pressure surrounding the exterior of the receptacle during further removal of gas from within the receptacle, before closing the receptacle.
  • a further aspect of the present invention provides apparatus for vacuum packaging, comprising a vacuum chamber having an extraction pump for extracting gas from within the interior of the chamber and a support for a loaded receptacle to be evacuated and sealed in the chamber; and means for closing a receptacle in the chamber; characterised by means for restoring gas pressure to the exterior of a receptacle disposed within the vacuum chamber after partial evacuation of the chamber by the extraction pump, and in that the gas pressure restoration means are effective to carry out at least two gas pressure restoration phases separated by a gas extraction step during which gas is extracted from within the chamber by the extraction pump.
  • said gas pressure restoration means comprises a gas admission valve connected to the space evacuated by the extraction pump.
  • FIG. 1 is a schematic side elevational view of a first embodiment of vacuum packaging apparatus in accordance with the present invention
  • FIG. 2 is a view similar to FIG. 1 but showing a second embodiment of apparatus in accordance with the invention
  • FIG. 3 is a cycle timing diagram showing the residual pressure P in the chamber plotted against time T of the cycle
  • FIG. 4 is a view similar to FIG. 1 but showing the apparatus during operation of the vacuum pump and with the air admission valve closed;
  • FIG. 5 is a view similar to FIG. 4 but showing the effect of the air admission valve in the open configuration
  • FIG. 6 is a view similar to FIG. 5 but showing the envelope-closing mechanism in operation.
  • the vacuum chamber 1 shown in FIG. 1 is of a conventional form and includes a vacuum enclosure comprising a cover 2 on a base 3 to which the cover is sealed along its rim 4.
  • An air extraction duct 5 leads to an extraction pump 6 whose discharge duct 7 conveys away air which has been extracted from the chamber 1.
  • the chamber further includes a receptacle-closing unit 8 having a drive mechanism 9, here comprising a pair of opposed hot weld bars 10 which are driven towards one another to contact the neck region of the receptacle 11 (in this case a plastics bag of heat shrinkable thermoplastic material) and are energized with a pulse of electric energy to heat seal the neck region of the envelope before the chamber 1 opens.
  • a drive mechanism 9 comprising a pair of opposed hot weld bars 10 which are driven towards one another to contact the neck region of the receptacle 11 (in this case a plastics bag of heat shrinkable thermoplastic material) and are energized with a pulse of electric energy to heat seal the neck region of the envelope before the chamber 1 opens.
  • This embodiment of the present invention provides for the incorporation of an air admission valve 12 on the chamber cover 1 to admit air into the chamber while the extraction pump 6 is in operation.
  • This unexpected modification has the surprising advantage of being able to allow more effective extraction of air from within the receptacle 11 provided the operation of the air admission valve is operated in accordance with the process of the present invention.
  • the air admission valve 12 includes an airflow regulator lever 13 allowing a throttle 14 to be adjusted to give the desired rate of venting of the valve 12 when in its open configuration. Furthermore, the valve 12 is connected, by pneumatic control line 15, to a pneumatic control unit 16 which provides signal pulses to the valve 12 in response to the vacuum level in the chamber 1 as sensed by way of a sensing conduit 17. It is expected that the rate of admission of air through the throttle 14 will be greater than the rate of extraction by the pump 6.
  • the control unit 16 for the air admission valve 12 includes a selector control 19 allowing adjustment of the particular value of the residual pressure within the chamber 1 at which the valve 12 is opened and closed.
  • control unit 16 responsive to the chamber pressure is an optional feature, although this type of control does provide a particularly convenient way of controlling the operation of the air admission valve 12 when carrying out the process of the present invention.
  • the chamber cover 2 is closed over the open receptacle 11 with article 18 therein, and the extraction pump 6 is energized to begin extraction of air from within the chamber 1 and consequently from within the receptacle 11 (by virtue of the neck region being open between the two spaced welding bars 10 of the closing mechanism 8).
  • the welding bars 10 are, during extraction, spaced apart such that air is extracted at a controlled rate from within the receptacle 11 and this rate of extraction is less than the rate of pressure decrease in the atmosphere within the chamber 1 but around the exterior of the receptacle 11, with the result that the receptacle 11 balloons outwardly away from the article 18.
  • the air admission valve 12 should then be opened in order to vent air into the chamber 1 (preferably by simply opening the chamber 1 directly to atmosphere to allow atmospheric air to mix with the residual atmosphere around the exterior of the receptacle 11). Where the receptacle has already ballooned away from the article, this venting has the result that the receptacle 11 is pressed inwardly against the exterior of the article 18.
  • the air pressure restoration phase is of limited duration so that when the air admission valve 12 is re-closed the continuing operation of the extraction pump 6 will effect extraction of the now slightly higher pressure atmosphere around the bag 11, while still evacuating the lower pressure interior of the bag 11. This extraction of the external air from around the bag 11 may shortly result in recurrence of the ballooning phenomenon, whereupon the air admission valve 12 is once again opened to build up gas pressure around the bag 11 to thrust the bag material onto the article 18 to achieve a pulsating reinforcement of the air extraction from within the bag 1.
  • this pulsating action of successive pressure reductions followed by pressure increases on the exterior of the receptacle can continue until a desired configuration has been obtained at which time the receptacle 11 is closed by operation of the closing means 8 when its actuating means 9 are energized.
  • FIG. 2 illustrates an alternative embodiment of the apparatus in accordance with the present invention, differing only in that the air admission valve 12 is connected in the extraction duct 5 to the pump 6.
  • the functional result will be the same in that the successive opening and closing of the air admission valve 12 superimposed on the continuous operation of the extraction pump 6 will achieve a pulsating pressure in the residual atmosphere around the receptacle 11 in both FIG. 1 and FIG. 2.
  • the air admission valve 12 in FIG. 1 need not be incorporated on the cover 2; air admission means of any suitable form could be used, for example a valve connected to an air admission port in the base 3 inwardly of the position occupied by the rim 4 of the cover 2 in the closed configuration of the chamber.
  • FIG. 2 also includes an adjustable throttle valve 14 having a control lever 13, and an adjuster 19 on the control unit 16 for selecting a different pressure value at which the air admission valve 12 is to open or close.
  • the air admission valve 12 is operated in response to attainment of particular pressure value in the chamber 1, as indicated above, it is not essential for the control of the air admission valve to be responsive to chamber pressure.
  • the control unit 16 may be a pulsing controller of a pneumatic type which imposes pressure or suction pulses on the control line 15 to the air admission valve 12 at predetermined time intervals after commencement of the evacuation of the chamber 1.
  • the control unit 16 may not be pneumatic but may be connected to the valve 12 by a mechanical linkage or by an electrical linkage, in which case the pressure- or time-responsive controller will be of a mechanical or an electrical type, respectively.
  • the receptacle is a plastic envelope
  • a mechanical feeler unit to be incorporated within the chamber 1 in order to detect when the flexible envelope such as bag 11 balloons, since the ballooned state of the bag 11 at the instant of the opening of the air admission valve 12 assists the extraction operation.
  • FIG. 1 for use with plastics flexible bags 11 will be described in its detailed operating cycle, with reference to the cycle diagram of FIG. 3 and with reference to FIGS. 4, 5 and 6 showing the apparatus of FIG. 1 at different states in its operating cycle. It will of course be appreciated that the different location of the control line 15a and the sensing line 17a in FIGS. 4 to 6 with respect to the positions of the corresponding lines 15 and 17 in FIG. 1 is of no functional significance but is simply to illustrate the fact that the routing of these lines is purely optional at the discretion of the machine designer.
  • FIG. 3 shows that at the start of a typical operating cycle the pressure within the chamber is at a value P 1 ,normally the atmospheric pressure in the packaging room.
  • the machine is set up by adjusting the throttle control lever 13 to give the desired air admission rate, and also adjusting the pressure control 19 to select a particular pressure at which the control unit 16 operates to create a signal pulse in control line 15. This pressure P 2 is shown in FIG. 3.
  • the pressure P reduces from initial value P 1 at point I to a value P 2 which has been pre-set on the control 19, and at which the control unit 16 sends a signal pulse to the valve 12.
  • the pressure P is still reducing below the value P 2 between point II and point III on the pressure/time curve.
  • the opening of the air admission valve 12 will, however, result in a reduction in the rate of extraction of air by the pump 6 and consequently the pressure P bottoms out at a value P 3 at point III, and then begins to rise towards the value P 2 which is attained at point IV on the curve.
  • control unit 16 emits another signal pulse closing the air admission valve 12, but nevertheless there remains an upward swing in the pressure value towards the point V on the curve.
  • This upward swing flattens out at point V at pressure value P 5 , and the pressure then begins to reduce towards point VI on the curve.
  • the above-described sequence of events between points II, III, IV and V is repeated between points VI, VII, VIII and IX.
  • the receptacle-closing unit 8 is operated to seal the bag 11 while the pressure around the bag is increasing and pumping out residual air from within the envelope. This is a preferred aspect of the invention and ensures optimum elimination of trapped bubbles of air or other gas from within the bag 1.
  • the programmer 20 prefferably triggers the closing action to occur between points VIII and IX, so that the repressurization pulse on the envelope has had a chance to build up momentum.
  • the flexible bag 11 balloons at some stage between points I and III, collapses between points III and V, balloons again between points V and VII and collapses between points VII and IX.
  • the receptacle-closing means 8 are operated between points VI and VII or between corresponding points on a further descending half cycle of the curve after point IX.
  • FIG. 4 illustrates the condition of the apparatus between points I, II and III of the cycle diagram of FIG. 3. This same configuration applies between points V, VI and VII.
  • the extraction pump 6 is in operation but the air admission valve 12 is closed.
  • FIG. 5 illustrates the configuration between points III, IV and V in the cycle diagram of FIG. 3. This configuration is repeated between points VII, VIII and IX.
  • the air admission valve receives a signal along the signal line 15a and opens to admit air into the chamber 1.
  • FIG. 6 illustrates the configuration at one instant during the interval between points VIII and IX, shortly before point IX, when the control unit 16 transmits a signal pulse along the signal line 15a and closes the air admission valve 12 while the receptacle-closing means 8 are actuated to seal the envelope.
  • the sealed receptacle 11 may be subjected to a shrinking operation to cause the receptacle material to contact the article 18 intimately.
  • the apparatus in accordance with the present invention may be equipped from the outset with repressurization means such as the air admission valve 12, it is also within the scope of the present invention for an existing vacuum chamber machine to be modified, simply by the addition of repressurization means such as the air admission valve 12 (and suitable control means therefor) either on the chamber 1 or on the extraction conduit 5, so as to modify that existing machine to operate in accordance with the process of the present invention.
  • repressurization means such as the air admission valve 12 (and suitable control means therefor) either on the chamber 1 or on the extraction conduit 5, so as to modify that existing machine to operate in accordance with the process of the present invention.
  • the envelope-closing means 8 comprises a heat sealing bar arrangement
  • other suitable closing mechanisms may be provided, for example radiant heat fusion sealing means operating in conjunction with a resilient clamp to allow escape of air from within the receptacle 11 before the emission of a radiant heat pulse to cause the receptacle to fuse upon pressing contact with itself by the increasing pressure in the chamber 1 between points VII and IX of FIG. 3.
  • FIGS. 1, 2, 4, 5 and 6 shows a single, open chamber, it is of course possible for the process of the present invention to be carried out using the "in-chamber nozzle" disclosed in the above mentioned U.S. Pat. No. 3,714,754 (Holcombe), or in the double chamber construction disclosed in the above mentioned U.S. Pat. No. 3,832,824 (Burrell).
  • the operation of the air admission valve 12 may be controlled simply on the basis of time elapsed since the start of the cycle, or in response to operation of a mechanical feeler, and both of these control mechanisms can be incorporated as modifications to existing vacuum chamber packaging equipment.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
US06/747,400 1981-10-16 1985-06-21 Vacuum packaging method Expired - Fee Related US4922686A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT24538/81A IT1139239B (it) 1981-10-16 1981-10-16 Apparecchiatura e procedimento per il confezionamento sottovuoto
IT24538A/81 1981-10-16

Related Parent Applications (1)

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US06433319 Continuation 1982-10-07

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US4922686A true US4922686A (en) 1990-05-08

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US (1) US4922686A (de)
EP (1) EP0077458B1 (de)
JP (1) JPS5882823A (de)
BR (1) BR8205987A (de)
DE (1) DE3268294D1 (de)
IT (1) IT1139239B (de)
ZA (1) ZA827527B (de)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528880A (en) * 1992-05-15 1996-06-25 Inauen Maschinen Ag Process for the packaging of product under vacuum and vacuum-packaging machine
US5655357A (en) * 1995-05-02 1997-08-12 Tilia International, Inc. Exhaust flow rate vacuum sensor
US6321513B1 (en) * 1996-10-17 2001-11-27 Pi-Patente Gesellschaft Mit Beschränkter Haftung (Gmbh) Entwicklung Und Verwertung Method for packing articles in an elastic packing material and device to carry out said method
US20040172924A1 (en) * 2001-01-04 2004-09-09 Tadoru Suga Apparatus for continuously forming vaccum packaged body
US20040200193A1 (en) * 2003-04-08 2004-10-14 Johnson Frank Wagner New process for removing air and packaging an object, compressing the packaging material from the outside with external pressure rather than a vacuum
US20050022473A1 (en) * 2003-07-31 2005-02-03 Small Steven D. Removable drip trays and bag clamps for vacuum packaging appliances
US20050050855A1 (en) * 2003-02-27 2005-03-10 Baptista Alexandre A. N. Vacuum packaging appliance with removable trough
EP1564147A1 (de) * 2004-02-13 2005-08-17 Cryovac, Inc. Verfahren und Vorrichtung zum Vakuumverpacken
US7003928B2 (en) 2002-10-04 2006-02-28 Jcs/Thg, Llc Appliance for vacuum sealing food containers
ES2253023A1 (es) * 2003-05-14 2006-05-16 Alberto Miro Diaz Procedimiento para envasar al vacio contenedores y maquina para envasar.
US7076929B2 (en) 2002-10-04 2006-07-18 Jcs/Thg, Llc Appliance for vacuum sealing food containers
US20060218885A1 (en) * 2003-07-31 2006-10-05 Tilia International, Inc. Vacuum packaging appliance
US7131250B2 (en) 2002-10-04 2006-11-07 Jcs/Thg, Llp Appliance for vacuum sealing food containers
US20080022637A1 (en) * 2006-06-21 2008-01-31 Buchko Raymond G Vacuum Packaging System With End Cutter
US20080307755A1 (en) * 2004-10-01 2008-12-18 Stelliferi & Itavex S.P.A. Process for Good Packaging, Namely Food Stuffs, Packagings, and Kits for Their Realization
US7478516B2 (en) 2003-07-31 2009-01-20 Sunbeam Products, Inc. Vacuum packaging appliance
US20090255218A1 (en) * 2008-03-26 2009-10-15 Multivac Sepp Haggenmueller Gmbh & Co. Kg Method and device for packaging of goods in bags
US20100116348A1 (en) * 2006-05-11 2010-05-13 Buchko Raymond G System And Method For Evacuating A Vacuum Chamber
US20120125521A1 (en) * 2010-11-02 2012-05-24 Rovema Gmbh Ultrasonic hot sealing method with regulation of sealing pressure
DE102010055438A1 (de) * 2010-12-21 2012-06-21 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackungsmaschine und Verfahren zum Erzeugen einer Vakuumverpackung
US20120167531A1 (en) * 2010-11-02 2012-07-05 Rovema Gmbh Method for energy-efficient sealing of tubular bags
US20140069057A1 (en) * 2012-09-10 2014-03-13 Multivac Sepp Haggenmuller Gmbh & Co. Kg Method for operating a chamber packaging machine
US20150040517A1 (en) * 2012-03-27 2015-02-12 Tosei Corporation Vacuum packaging method and vacuum packaging apparatus
US20150135640A1 (en) * 2013-11-19 2015-05-21 Zhihe Hu Cavity-type vacuum sealing machine
JP2015187014A (ja) * 2015-06-22 2015-10-29 株式会社Tosei 真空包装装置、および、真空包装方法
US20180127127A1 (en) * 2015-05-16 2018-05-10 Oxy-Low Systems Europe Bv A method and apparatus for packaging of one or more boxes filled with tobacco in a plastic bag
WO2019040626A1 (en) * 2017-08-22 2019-02-28 Tmt Vacuum Fillers, Llc VACUUM APPARATUS FOR FILLING BULK CONTAINERS
US20240076079A1 (en) * 2021-02-10 2024-03-07 Guangzhou Argion Electric Appliance Co., Ltd. Multifunction vacuum package machine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411917A1 (de) * 1984-03-30 1985-10-03 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Verfahren und vorrichtung zum verpacken von gegenstaenden
US4709819A (en) * 1986-07-23 1987-12-01 Environmental Diagnostics, Inc. Method for preserving plated media and product
SE463145B (sv) * 1989-08-22 1990-10-15 Ingf Gaveco Ab Foerfarande och anordning foer att bibringa en flexibel foerpackning minimal volym samt foerpackning utfoerd i enlighet daermed
US6478937B2 (en) 2001-01-19 2002-11-12 Applied Material, Inc. Substrate holder system with substrate extension apparatus and associated method
ES2565522B1 (es) * 2014-10-02 2017-01-12 Immobles Del Segria, S.L. Procedimiento para la calibración automática de una máquina envasadora
JP6537270B2 (ja) * 2014-12-24 2019-07-03 株式会社オークローンマーケティング 真空包装機
JP6498955B2 (ja) * 2015-02-16 2019-04-10 ホシザキ株式会社 真空包装機
JP7280020B2 (ja) * 2018-05-22 2023-05-23 株式会社Tosei 真空包装装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491504A (en) * 1967-10-02 1970-01-27 William E Young Method and apparatus for vacuum skin packaging
DE2161608A1 (de) * 1970-12-14 1972-06-29 W.R. Grace & Co., New York, N.Y. (V.StA.) Verfahren und Vorrichtung zum Evakuieren von Behältern
DE2247452A1 (de) * 1972-09-27 1974-04-04 Hagedorn Kg Technopack Ewald Verfahren und vorrichtung zum evakuieren und verschliessen eines verpackungsbeutels
US3832824A (en) * 1973-06-29 1974-09-03 Grace W R & Co Apparatus and method for evacuating packages
US3851437A (en) * 1973-12-10 1974-12-03 Grace W R & Co Receptacle evacuation apparatus and method
US3895475A (en) * 1974-04-18 1975-07-22 Young William E Method and apparatus for vacuum skin packaging of soft meat and the like
DE2409716A1 (de) * 1974-03-01 1975-09-11 Kodjo Dipl Ing Kudiabor Implosionskammerverfahren und vorrichtung zum evakuieren von verpackungsfolienbeuteln
US3965646A (en) * 1975-02-26 1976-06-29 W. R. Grace & Co. Adjustable sealing device
DE2750934A1 (de) * 1976-11-19 1978-05-24 Bernardo P Di Verfahren und vorrichtung zum vakuumverpacken von waren
US4132048A (en) * 1976-03-29 1979-01-02 Day Timothy T Vacuum packaging bulk commodities
US4182095A (en) * 1976-03-29 1980-01-08 Day Timothy T Packaging bulk commodities
GB2078658A (en) * 1980-06-25 1982-01-13 Grace W R & Co Vacuum packaging process and apparatus
NL173097C (nl) * 1970-05-08 1983-12-01 Bestobell Uk Ltd Signaleringsinrichting voor een vloeistofniveau.
US4457122A (en) * 1981-08-21 1984-07-03 W. R. Grace & Co., Cryovac Div. Vacuum packaging goods in heat shrinkable plastic bags using flexible diaphragms

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729762A1 (de) * 1977-07-01 1979-01-18 Bayer Ag Verfahren zur herstellung fluorierter s-triazine

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491504A (en) * 1967-10-02 1970-01-27 William E Young Method and apparatus for vacuum skin packaging
NL173097C (nl) * 1970-05-08 1983-12-01 Bestobell Uk Ltd Signaleringsinrichting voor een vloeistofniveau.
DE2161608A1 (de) * 1970-12-14 1972-06-29 W.R. Grace & Co., New York, N.Y. (V.StA.) Verfahren und Vorrichtung zum Evakuieren von Behältern
US3714754A (en) * 1970-12-14 1973-02-06 Grace W R & Co Vacuumizing system
DE2247452A1 (de) * 1972-09-27 1974-04-04 Hagedorn Kg Technopack Ewald Verfahren und vorrichtung zum evakuieren und verschliessen eines verpackungsbeutels
US3832824A (en) * 1973-06-29 1974-09-03 Grace W R & Co Apparatus and method for evacuating packages
US3851437A (en) * 1973-12-10 1974-12-03 Grace W R & Co Receptacle evacuation apparatus and method
DE2409716A1 (de) * 1974-03-01 1975-09-11 Kodjo Dipl Ing Kudiabor Implosionskammerverfahren und vorrichtung zum evakuieren von verpackungsfolienbeuteln
US3895475A (en) * 1974-04-18 1975-07-22 Young William E Method and apparatus for vacuum skin packaging of soft meat and the like
US3965646A (en) * 1975-02-26 1976-06-29 W. R. Grace & Co. Adjustable sealing device
US4132048A (en) * 1976-03-29 1979-01-02 Day Timothy T Vacuum packaging bulk commodities
US4182095A (en) * 1976-03-29 1980-01-08 Day Timothy T Packaging bulk commodities
US4164111A (en) * 1976-11-19 1979-08-14 Pietro Di Bernardo Vacuum-packing method and apparatus
DE2750934A1 (de) * 1976-11-19 1978-05-24 Bernardo P Di Verfahren und vorrichtung zum vakuumverpacken von waren
GB2078658A (en) * 1980-06-25 1982-01-13 Grace W R & Co Vacuum packaging process and apparatus
US4457122A (en) * 1981-08-21 1984-07-03 W. R. Grace & Co., Cryovac Div. Vacuum packaging goods in heat shrinkable plastic bags using flexible diaphragms

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528880A (en) * 1992-05-15 1996-06-25 Inauen Maschinen Ag Process for the packaging of product under vacuum and vacuum-packaging machine
US5655357A (en) * 1995-05-02 1997-08-12 Tilia International, Inc. Exhaust flow rate vacuum sensor
US6321513B1 (en) * 1996-10-17 2001-11-27 Pi-Patente Gesellschaft Mit Beschränkter Haftung (Gmbh) Entwicklung Und Verwertung Method for packing articles in an elastic packing material and device to carry out said method
US6889487B2 (en) * 2001-01-04 2005-05-10 Ibaraki Seiki Machinery Co., Ltd. Apparatus for continuously forming vacuum packaged body
US20040172924A1 (en) * 2001-01-04 2004-09-09 Tadoru Suga Apparatus for continuously forming vaccum packaged body
US7454884B2 (en) 2002-10-04 2008-11-25 Sunbeam Products, Inc. Appliance for vacuum sealing food containers
US7003928B2 (en) 2002-10-04 2006-02-28 Jcs/Thg, Llc Appliance for vacuum sealing food containers
US7076929B2 (en) 2002-10-04 2006-07-18 Jcs/Thg, Llc Appliance for vacuum sealing food containers
US7131250B2 (en) 2002-10-04 2006-11-07 Jcs/Thg, Llp Appliance for vacuum sealing food containers
US7401452B2 (en) 2002-10-04 2008-07-22 Sunbeam Products, Inc. Appliance for vacuum sealing food containers
US7231753B2 (en) 2002-10-04 2007-06-19 Sunbeam Products, Inc. Appliance for vacuum sealing food containers
US20050050855A1 (en) * 2003-02-27 2005-03-10 Baptista Alexandre A. N. Vacuum packaging appliance with removable trough
US7484346B2 (en) 2003-02-27 2009-02-03 Sunbeam Products, Inc. Vacuum packaging appliance with removable trough
US7204067B2 (en) 2003-02-27 2007-04-17 Sunbeam Products, Inc. Vacuum packaging appliance with removable trough
US20040200193A1 (en) * 2003-04-08 2004-10-14 Johnson Frank Wagner New process for removing air and packaging an object, compressing the packaging material from the outside with external pressure rather than a vacuum
ES2253023B1 (es) * 2003-05-14 2007-07-16 Alberto Miro Diaz Procedimiento para envasar al vacio contenedores y maquina para envasar.
ES2253023A1 (es) * 2003-05-14 2006-05-16 Alberto Miro Diaz Procedimiento para envasar al vacio contenedores y maquina para envasar.
US20060218885A1 (en) * 2003-07-31 2006-10-05 Tilia International, Inc. Vacuum packaging appliance
US20070033907A1 (en) * 2003-07-31 2007-02-15 Tilia International Inc. Removable drip trays and bag clamps for vacuum packaging appliances
US7464522B2 (en) 2003-07-31 2008-12-16 Sunbeam Products, Inc. Vacuum packaging appliance
US7478516B2 (en) 2003-07-31 2009-01-20 Sunbeam Products, Inc. Vacuum packaging appliance
US20050022473A1 (en) * 2003-07-31 2005-02-03 Small Steven D. Removable drip trays and bag clamps for vacuum packaging appliances
EP1564147A1 (de) * 2004-02-13 2005-08-17 Cryovac, Inc. Verfahren und Vorrichtung zum Vakuumverpacken
US20080307755A1 (en) * 2004-10-01 2008-12-18 Stelliferi & Itavex S.P.A. Process for Good Packaging, Namely Food Stuffs, Packagings, and Kits for Their Realization
US20100116348A1 (en) * 2006-05-11 2010-05-13 Buchko Raymond G System And Method For Evacuating A Vacuum Chamber
US20080022637A1 (en) * 2006-06-21 2008-01-31 Buchko Raymond G Vacuum Packaging System With End Cutter
US7726104B2 (en) 2006-06-21 2010-06-01 Cp Packaging, Inc. Vacuum packaging system with end cutter
US20090255218A1 (en) * 2008-03-26 2009-10-15 Multivac Sepp Haggenmueller Gmbh & Co. Kg Method and device for packaging of goods in bags
US9856042B2 (en) * 2008-03-26 2018-01-02 Multivac Sepp Haggenmueller Se & Co. Kg Method and device for packaging of goods in bags
US8349107B2 (en) * 2010-11-02 2013-01-08 Rovema Gmbh Method for energy-efficient sealing of tubular bags
US8308881B2 (en) * 2010-11-02 2012-11-13 Rovema Gmbh Ultrasonic hot sealing method with regulation of sealing pressure
US20120167531A1 (en) * 2010-11-02 2012-07-05 Rovema Gmbh Method for energy-efficient sealing of tubular bags
US20120125521A1 (en) * 2010-11-02 2012-05-24 Rovema Gmbh Ultrasonic hot sealing method with regulation of sealing pressure
US9073654B2 (en) 2010-12-21 2015-07-07 Multivac Sepp Haggenmueller Gmbh & Co. Kg Packaging machine and method of forming a vacuum package
DE102010055438A1 (de) * 2010-12-21 2012-06-21 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackungsmaschine und Verfahren zum Erzeugen einer Vakuumverpackung
US9994342B2 (en) * 2012-03-27 2018-06-12 Tosei Corporation Vacuum packaging method and vacuum packaging apparatus
US20150040517A1 (en) * 2012-03-27 2015-02-12 Tosei Corporation Vacuum packaging method and vacuum packaging apparatus
US10988271B2 (en) * 2012-03-27 2021-04-27 Tosei Corporation Vacuum packaging method and vacuum packaging apparatus
US20180257798A1 (en) * 2012-03-27 2018-09-13 Tosei Corporation Vacuum packaging method and vacuum packaging apparatus
US20140069057A1 (en) * 2012-09-10 2014-03-13 Multivac Sepp Haggenmuller Gmbh & Co. Kg Method for operating a chamber packaging machine
US9550595B2 (en) * 2012-09-10 2017-01-24 Multivac Sepp Haggenmueller Se & Co. Kg Method for operating a chamber packaging machine
US9764868B2 (en) * 2013-11-19 2017-09-19 Bigland Electric Appliance Co., Ltd. Cavity-type vacuum sealing machine
US20150135640A1 (en) * 2013-11-19 2015-05-21 Zhihe Hu Cavity-type vacuum sealing machine
US20180127127A1 (en) * 2015-05-16 2018-05-10 Oxy-Low Systems Europe Bv A method and apparatus for packaging of one or more boxes filled with tobacco in a plastic bag
US11186397B2 (en) * 2015-05-16 2021-11-30 Oxy-Low Systems Europe Bv Method and apparatus for packaging of one or more boxes filled with tobacco in a plastic bag
JP2015187014A (ja) * 2015-06-22 2015-10-29 株式会社Tosei 真空包装装置、および、真空包装方法
WO2019040626A1 (en) * 2017-08-22 2019-02-28 Tmt Vacuum Fillers, Llc VACUUM APPARATUS FOR FILLING BULK CONTAINERS
US11390402B2 (en) 2017-08-22 2022-07-19 Tmt Vacuum Fillers, Llc Vacuum apparatus for filling bulk containers
US20240076079A1 (en) * 2021-02-10 2024-03-07 Guangzhou Argion Electric Appliance Co., Ltd. Multifunction vacuum package machine

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JPS5882823A (ja) 1983-05-18
IT1139239B (it) 1986-09-24
EP0077458A1 (de) 1983-04-27
BR8205987A (pt) 1983-09-13
IT8124538A0 (it) 1981-10-16
EP0077458B1 (de) 1986-01-02
ZA827527B (en) 1984-05-30
DE3268294D1 (en) 1986-02-13

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